iPhone 4 Battery Drain – Some Tips

OK, this is different of what I use to write but I think it would be helpful for all iphone 4 users. I had my iphone 4 few days back and I was quite impressed by this new smartphone until I realized the phone is draining my battery like a Ferrari sucks up fuel. AllContinue reading “iPhone 4 Battery Drain – Some Tips”

Codec Bandwidth Calculation G711/G729

RTP: Voice payloads are encapsulated by RTP, then by UDP, then by IP. A Layer 2 header of the correct format is applied; the type obviously depends on the link technology in use by each router interface. A single voice call generates two one-way RTP/UDP/IP packet streams. UDP provides multiplexing and checksum capability; RTP providesContinue reading “Codec Bandwidth Calculation G711/G729”

Upgrade Process

This is just notes to myself as after downloading the upgrade files for CUCM or Unity or anything else…we all need to follow the same process of combining them and then verifiying the hash value. Download FCIV. Download the files as required: UCS_Install_UCOS_7.1.3.32900-4.sgn.iso_part1of2 UCS_Install_UCOS_7.1.3.32900-4.sgn.iso_part2of2 Run the following command to combine these files into one .iso fileContinue reading “Upgrade Process”

CCIE Voice Lab Strategy

CCIE Lab is one of the toughest IT exam out there and I believe CCIE Voice is “the” toughest (I am not making this up, this has been acknowledged by Quad/Triple CCIEs) as it involves so many applications which can break and go wrong so easily if you are not good in configuring them. MakingContinue reading “CCIE Voice Lab Strategy”